Correct Cloud Run DomainMapping namespace in encoder (#2458)

Merged PR #2458.

products/cloudrun/terraform.yaml

@@ -24,7 +24,7 @@ overrides: !ruby/object:Overrides::ResourceOverrides
         test_env_vars:
           namespace: :PROJECT_NAME
     custom_code: !ruby/object:Provider::Terraform::CustomCode
-      encoder: 'templates/terraform/encoders/cloud_run.go.erb'
+      encoder: 'templates/terraform/encoders/cloud_run_domain_mapping.go.erb'
       decoder: 'templates/terraform/decoders/cloud_run.go.erb'
     properties:
       name: !ruby/object:Overrides::Terraform::PropertyOverride
@@ -53,7 +53,7 @@ overrides: !ruby/object:Overrides::ResourceOverrides
         test_env_vars:
           namespace: :PROJECT_NAME
     custom_code: !ruby/object:Provider::Terraform::CustomCode
-      encoder: 'templates/terraform/encoders/cloud_run.go.erb'
+      encoder: 'templates/terraform/encoders/cloud_run_service.go.erb'
       decoder: 'templates/terraform/decoders/cloud_run.go.erb'
     properties:
       name: !ruby/object:Overrides::Terraform::PropertyOverride

templates/terraform/encoders/cloud_run_domain_mapping.go.erb

@@ -0,0 +1,22 @@
+<%# The license inside this block applies to this file.
+	# Copyright 2019 Google Inc.
+	# Licensed under the Apache License, Version 2.0 (the "License");
+	# you may not use this file except in compliance with the License.
+	# You may obtain a copy of the License at
+	#
+	#     http://www.apache.org/licenses/LICENSE-2.0
+	#
+	# Unless required by applicable law or agreed to in writing, software
+	# distributed under the License is distributed on an "AS IS" BASIS,
+	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+	# See the License for the specific language governing permissions and
+	# limitations under the License.
+-%>
+name := d.Get("name").(string)
+metadata := obj["metadata"].(map[string]interface{})
+metadata["name"] = name
+
+// The only acceptable version/kind right now
+obj["apiVersion"] = "domains.cloudrun.com/v1alpha1"
+obj["kind"] = "<%= "#{object.name}" -%>"
+return obj, nil